摘要:
A method of processing a porous article includes distributing a blended powder material including loose electrically conductive particles and loose resin particles into a mold. The blended powder material is consolidated within the mold under a molding pressure and a molding temperature into a consolidated article. The loose resin particles of the blended powder material are selected to be within a predefined particle size distribution to control a physical property of the porous article.
摘要:
A process for the production of low-temperature activated or partially activated partially decomposed organic matter for use as an ion-exchange medium comprising the steps of granulating partially decomposed moisture-bearing organic matter, drying the granules and activating the granules at a temperature of about 175-520 °C, wherein the granule has a hardness and cation-exchange capacity suitable for a particular application desired.
摘要:
A process for producing molecular-sieve carbon by thermally oxidizing the product of curing of a thermosetting resin, pulverizing the product of oxidative modification thus obtained, granulating the product of pulverization thus obtained, carbonizing the product of granulation thus obtained, thermally treating the product of carbonization thus obtained, and effecting micropore regulation of the product of thermal treatment thus obtained.
摘要:
A novel metal oxide nanotube made only of a metal oxide is produced by the use of a helical fiber (Japanese Patent Application No. 2001-239014). The metal oxide nanotube has a pore diameter distribution having two peak pore diameters in the ranges of 1-2 nm and 3-7 nm respectively, constitutes a double helix, takes the form of a hollow cylinder, and is made only of a metal oxide which may contain hydroxyl groups. The nanotube can be produced by a process comprising the step of dissolving a compound (1) represented by the general formula (1) and a compound (2) represented by the general formula (2): (1) (2) [wherein A and B may be the same or different from each other and are each a sugar residue; R is alkyl; and R’ is hydrogen or alkyl] in water or a mixture of water and alcohol and allowing the resulting solution to stand; the step of adding a precursor of a metal oxide to the solution; the step of adding a catalyst for converting the precursor into a metal oxide; and the step of firing the gel formed in the preceding step. The nanotube exhibits an extremely high hydrogen occlusion capacity.
摘要:
Compositions and methods for selectively binding specific metal ions, such as Ca and C , contained in a source solution are disclosed and described. This is accomplished by the use of a composition comprised of an EGTA ligand covalently bonded to a membrane support. The composition formula of the present invention is M-B-L where M is a membrane having a hydrophilic, partially hydrophilic or a composite membrane with a hydrophilic surface, B is a covalent linkage, and L is an EGTA ligand. The separation is accomplished by passing a source solution containing the ions to be separated through a device containing the membrane-ligand composition, causing the selected ions to be complexed to the EGTA ligands and subsequently removing the selected ions from the device by passing an aqueous receiving solution through the device and quantitatively stripping the selected ions from the EGTA ligand.
摘要:
Compositions and methods for selectively binding specific metal ions, such as Ca?+ and Cd¿, contained in a source solution are disclosed and described. This is accomplished by the use of a composition comprised of an EGTA ligand covalently bonded to a membrane support. The composition formula of the present invention is M-B-L where M is a membrane having a hydrophilic, partially hydrophilic or a composite membrane with a hydrophilic surface, B is a covalent linkage, and L is an EGTA ligand. The separation is accomplished by passing a source solution containing the ions to be separated through a device containing the membrane-ligand composition, causing the selected ions to be complexed to the EGTA ligands and subsequently removing the selected ions from the device by passing an aqueous receiving solution through the device and quantitatively stripping the selected ions from the EGTA ligand.
摘要:
A process for the preparation from a partially decomposed organic material like peat a granulated or pelletized sorption medium using low-temperature, thermal activation of the sorption medium to produce a high degree of granule or pellet hardness balanced against an efficacious level of ion-exchange and adsorption capacity, followed by chemical treatment of the thermally-activated sorption material via an acid solution and a salt solution to increase its ion-exchange and adsorption performance while minimizing the transfer of natural impurities found in the sorption medium to an aqueous solution is provided by this invention. The sorption medium of this invention can be used in a variety of aqueous solution treatment processes, such as wastewater treatment.